First, and it's obvious, but I've forgotten it before, did you check the fuse? Second, did you check the ground under the hood? I know some folks think the resistor never actually goes bad and the ground is always good, but that's not always the case. If your fan doesn't work on any speed, chances are the ground is bad, not the resistor. I searched really quick and found this post... I'm not sure what page it was on, but it's in there. Sorry I don't have time right now to help more, but at least give these a shot and see what it is (and don't forget the fuse!)
rkinney said:
hrkart66 said:
Hello every one. Im new here but I do have some tips. I am the fleet manager for a Miller dist.
TRY THIS BEFOR BUYING MORE DELPHI [email protected]
1. If you havent already, replace the connector to the blower motor resistor.
2. If the blower has stopped working all together.
A. Pull the connector out of the blower motor and check the orange wire for continuity to ground with the a/c control set to any fan speed.
B. If there is no ground present go under the hood and looking over the passenger fender between the air box and the inner fender you will see a small
black box with at least 4 wires coming out of it and it will be bolted to the fender with a 10mm bolt. This a ground distribution point and it SUCKS. It
will be about an 1.5 inchs by .5 in thick. I have found the first time that scuffing the area around where the bolt goes to bare metal will work but now
I just cut them all as close to the dist. block as possable and use 2 ring terminals big enough for 2 wires and bolt it back on.
Also they dont tell you this but the burnt resistor connector is caused by the intermittant grounding issue and we also have found that the trucks that we did this to before doing the brake switch recall havent had that problem. If you notice that with the wires cut from the dist. block or if you take the top part of it off and break the connections and turn on the key you will get all sorts of messages from the inst. cluster like brake and abs fault.
Thank you for chiming in hrkart66! I am unsure of the exact location. Is this the piece you are talking about? It is hard to take a picture right now cause it is dark and freaking cold out side :lol:. So just take it off and clean/scuff off the paint around the hole and bolt it back up?
Thanks!
Rob
And this is the ground point under the hood. The one you want is on the passenger side, but there is one on both sides, and checking both can't hurt (a good ground is always preferred). I didn't cut mine out, just took the bolt out and cleaned it up really good (both the bolt and the hole) and then scuffed up the paint where the bolt touches the fender. I haven't had a problem with the fan since, well, once, but it was a battery problem, not the fan.
Hope this helps.
-Adam